“The Polarity of Water” a water molecule is joined to 4 various other water molecules by hydrogen bonds.
You are watching: Which statement must be mentioned in explaining why amphipathic
a.2 … polar covalentb.two … hydrogen—c.4 … hydrogfinish.four … polar covalente.3 … ionic
The unequal sharing of electrons within a water molecule makes the water molecule _____.
The electrons spend more time with the oxygen of the water molecule than through the hydrogens of water. Therefore, the oxygen has actually a net negative charge and also the hydrogens have actually a net positive charge.
a.have a low surconfront tensionb.change easily from a liquid to gaseous formc.ionicd.polar—e.hydrophobic
C. Hydrogen Bonds are weaker than covalent bonds because they execute not involve sharing of electrons, and they are weaker than ionic bonds bereason they involve the attraction of partial (not full) oppowebsite charges.
a.The insect is swimming.b.The insect is flying simply above the water c.surconfront.d.Surface tension.—e.The insect is exceptionally light.f.It is challenging to adjust the temperature of water.
a. Water molecules tempt to each otherb. A drop of water spilled on a table creates a drop on the table, fairly than spreading out over the surface
a. A water stride runs throughout a pond without breaking surfaceb. A sewing needle floats when it is inserted gently on peak of water in a bucket
Carbonated cola is even more acidic than coffee or even ovariety juice because cola has phosphoric acid.What is the molar concentration of
(a) one mole of solute per liter of solution.—-(b) one mole of solute per liter of water.(c) a one-to-one ratio of solute to solvent molecules.Both (b) and (c).None of the over.
Which statement must be discussed in explaining why amphipathic molecules line up at a water surface?
a.Nonpolar teams repel water.b.Polar teams lure one an additional.—c.Polar groups repel water.d.Nonpolar groups entice one one more.e.All of the above.
a.molecules breaking into ions.b.a separation of molecules into neutral atoms.c.breaking covalent bonds.d.a change from a solid to a liquid.e.a mingling of molecules and/or ions. —
Water is a resource of ______________ for chemical reactions in cells.Water is a resource of ______________ for chemical reactions in cells.Many reactions incorpoprice O and H from water into organic molecules. This happens once you digest starch and also protein, for instance.
Which statement is true of water’s tensile strength?Which statement is true of water’s tensile strength?Since of hydrogen bonding, water coheres to itself and adheres to cell walls. That provides it feasible to pull water with plants without breaking the water column.
(a) It results from hydrogen bonding.(b) It helps to pull water via plants.(c) It entails both cohesion and also adhesion.Both (a) and (b).(a), (b), and (c). —
Water has surconfront anxiety bereason …
The hydrogen bonds between surface water molecules are usually slightly extended. Like a stretched sheet of rubber, the surface often tends to contract and resists being penetrated.
a. water often tends to evapoprice from the surface.b.hydrogen bonds between surface water molecules stand up to being extended.c.cohesion pressures are weaker at the surchallenge.d.there is positive press inside the water mass.e.molecules at the surconfront make more hydrogen bonds.
Which of the following helps a lot of to define why water has actually a high certain heat?Which of the complying with helps a lot of to define why water has a high specific heat?When you heat water, much of the warm is used to break hydrogen bonds. Only the remaining warmth can increase molecular movement, raising the temperature.
(a) A water molecule deserve to make 4 hydrogen bonds.—(b) The water molecule has exceptionally strong covalent bonds.(c) Water temperature is exceptionally sensitive to heat.Both (a) and (b).Both (b) and (c).
Which element is necessary in making it feasible to cool yourself by sweating? Think carefully!
Random collisions allow some molecules to accumulate even more energy than various other molecules. The weakness of hydrogen bonds allows those molecules escape, leaving the cooler molecules behind.
(a) Molecules collide through varied angles and speeds.(b) Hydrogen bonds are fairly weak.(c) Water has more energy at the body surconfront.Both (a) and (b).(a), (b), and also (c).—
Though you add heat, the temperature of boiling water stays consistent because …
At boiling, all the included warmth is used to break hydrogen bonds. Free of the water mass, the departing vapor carries ameans all the included power, with none left over to raise the temperature.
a.It takes energy to circulate water.b.Water has actually a consistent boiling temperature.c.It takes energy to break covalent bonds.d.It takes energy to break hydrogen bonds.—e.None of the above. The temperature rises during boiling.
Which statement helps to explain why ice is less dense than liquid water?
The ice lattice has actually open up spaces because of the angles at which hydrogen bonds create. Heat power can break water molecules totally free of the lattice so they relocate right into the openings.
(a) Water molecules make hydrogen bonds at definite angles.(b) Cold molecules relocate less than heat molecules.(c) Hydrogen bonds lengthen in the cold.All of the above.Both (a) and (b). —
The open up spaces in water’s crystal framework make it feasible for …The open spaces in water’s crystal framework make it feasible for …
(a) aquatic life to exist at the North Pole.—(b) water to have actually a low boiling allude.(c) life to occur in hot springs.Both (b) and (c).(a), (b), and (c).
Why doesn’t oil mix through water?
Water molecules cling to one an additional and also won’t part to make room for uncharged (nonpolar) molecules. There’s no repulsion.
(a) Nonpolar molecules repel water molecules.(b) Polar molecules repel nonpolar molecules.(c) Polar molecules entice one another.—(d) Nonpolar molecules lure one one more.Both (a) and (d).
Which building of water permits dogs to cool themselves by panting?Which residential or commercial property of water enables dogs to cool themselves by panting?Evaporative cooling takes place when molecules with the best kinetic energy leave a liquid as gas molecules. Because of water’s high warm of vaporization, a huge amount of heat have to be took in for 1 gram of water to be converted from liquid to gas. The dog loses this warm as the water on its tongue evaporates, allowing him to cool down by panting. To understand also why this answer is correct, read about evaporative cooling.
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a.water’s high warmth of vaporizationb.the development of covalent bonds between water moleculesc.water’s high surface tension
Which property of water enables a file towel to pick up a puddle of water?
Water adheres to the cellushed molecules in a file towel, enabling the towel to pick up a puddle of water. This is comparable to the adhesion in between water molecules and cellulose in cell walls responsible for water carry in plants.
a.water’s high surchallenge tensionb.water’s high warm of vaporizationc.adhesion of water molecules to various other kinds of molecules—
The unequal sharing of electrons flash card. (2018, Jan 22). Retrieved from https://nlinux.org/chapter-3-8-essay/